diff options
Diffstat (limited to 'psr.h')
-rw-r--r-- | psr.h | 15 |
1 files changed, 15 insertions, 0 deletions
@@ -64,4 +64,19 @@ inline static PSR_t read_CPSR(void) return CPSR; } +inline static PSR_t read_SPSR(void) +{ + PSR_t SPSR; + // get content of saved program status register + asm("mrs %0, spsr" : "=r" (SPSR.raw) :: "memory"); + + return SPSR; +} + +inline static void write_SPSR(PSR_t SPSR) +{ + // set content of saved program status register + asm("msr spsr, %0" :: "r" (SPSR.raw)); +} + #endif // PSR_H |